Automaton
The Magic Structure or Core of an Automaton wasn't as simple as those that was being used for a standard Mana Artfifact.
Wallace had to carefully think of a plan before he picked up the Basilisk and Jax Stone.
"It's better to use my own formation and array..."
After Wallace said this, he removed the prearranged Mana Gathering Formation and Mana Stabilization Array from the Artifact Forging Device. He noticed as well that they were just a standard formation and array and doesn't have unique arrangements on them.
'Luckily, I can still use them on this stage.' Some of the rewards given by the Pathfinder were memory crystals containing knowledge about the two auxiliary magic.
He had revealed it during the TMAC as well when he created Mirror of Trace using the Ancient Abyssal Glass, a fragment of glass with mysterious origin, to guarantee one of their Combat Magician's victory.